November, 1999 
SCAMIT Newsletter 
Vol. 18, No. 7 
Don reminded us of the upcoming SCUM 
(Southern California Unified Malacologists) 
meeting at UCSD in January. It is an excellent 
opportunity to meet fellow malacologists and 
hear what is the latest research. 
With the business meeting complete we began 
consideration of problem Crustacea, starting 
with Cumacea. Lamprops sp SD1 was 
collected at a Channel Islands station by Dean 
Pasko (CSDMWWD). The two female 
specimens had telsons with 5 terminal spines 
(two very short and three long—median one 
being slightly longer), and no lateral spines. 
The telson was short, approx. 2/3 the length of 
uropod peduncle, and the carapace was 
smooth, without ridges or sulci. Comparisons 
of the specimens with the CSDMWWD 
voucher of Lamprops carinata proved them to 
be the same. However, some discussion 
ensued about the presence of “real” L. carinata 
here in the SCB, since L. carinata is described 
from Vancouver Island, British Columbia, 
Canada. Don Cadien (CSDLAC) said that he 
would request specimens of L. carinata from 
the Puget Sound area to compare with local 
specimens. Next, a specimen of Lamprops sp 
D SCAMIT was also reviewed and the id was 
confirmed by Don and Tony Phillips 
(CLAEMD). 
The next animal to be examined was a Cumella 
sp. A small specimen was collected from the 
Channel Islands, originally identified as 
Cumella sp by Dean, it was then reviewed by 
Don and Tony. Don believed the specimen to 
represent a new species...at least new to 
SCAMIT. The specimen had very short 
uropods, which included the very short, blunt, 
rounded, and bare rami. The uropod peduncle 
had a mid-dorsal crest and the carapace was 
hirsute (i.e., few long setae). 
Amphipods were considered next. It was 
determined that Paradexamine sp SD1 is 
synonymous with Atylus sp 1 of Phillips and 
Paradexamine sp 1 of Phillips. This small 
introduced species has been taken sporadically 
over the past 7-10 years from various locations 
in southern California. It remains unclear if it is 
an undescribed species, or one of the numerous 
members of the genus described from 
elsewhere in the world. 
Next, a small pleustid from the Channel Islands 
(same station as the Cumella sp), collected by 
Dean, was examined and found to be 
Chromopleustes oculatus (Holmes) and not 
Parapleustes oculatus Holmes of Barnard and 
Given (1960). The latter was recognized as 
differing from Holmes’ species and given the 
provisional name Chromopleustes sp 1 by 
Bousfield & Hendrycks (1995). 
A Nasageneia quinsana (Barnard 1964) from 
Redondo Beach was brought in by Carol 
Paquette. Her identification was reviewed and 
found to be correct. Carol passed out a key she 
had made for the eusirid genera Pontogeneia 
and Tethygeneia. The key was modified to 
include Nasageneia quinsana. 
The species Aoroides secundus (Aoridae) was 
discussed. Dean found an Aoroides specimen 
without a terminal process on the peduncle of 
uropod 2 that keyed to the Hawaiian species A. 
secundus, in Mission Bay. Don mentioned that 
MBC used to see a similar species which was 
designated Aoroides sp A of MBC. Don 
recalled that there were some differences in the 
gnathopod structure between Aoroides sp A of 
MBC and A. secundus. Dean will attempt to 
compare his Mission Bay specimen to the 
description of A. secundus and create a voucher 
sheet. 
Caprellids were next in line. Carol Paquette 
brought a caprellid from the Long Beach power 
generating station closely matching Caprella 
californica except for the absence of a ventral 
spine between gnathopod 2 insertion points. 
The specimen had an extremely acute head 
spine, no lateral spines on the pereon and no 
spine between the insertions of gnathopod 2. 
Several keys were used to attempt to identify 
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