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Psyche 
[Vol. 90 
with a well-developed crest of 2 ridges, these up to 8 apart, and with 3 
strong teeth on each side. Underside of horn with a sparse brush of 
suberect, anteriorly directed simple setae 10 long. Elytra 122/65,87, 
strongly inflated, punctures ca. 3 apart but obscured by dense scales 
ca. 4 long; no tactile setae discernible. Hind tibia 47 long, tarsus 61, 
front tarsus 29. 
Holotype, $, rep. dom.: Las Salinas b. Bani ( 10. X. 1979, J. & S. 
Klapperich) in Natural History Museum, Basel, Switzerland. Para- 
types; 2 9, same data, Basel and FGW collection. 
Relationships: The species of Mecynotarsus in the elegans-group 
seem assignable to at least 3 subgroups. The first, already noted 
(Werner 1962), has the sutural area of the elytral apex pale, this 
zone restricted anteriorly by oblique dark bands. To this group 
belong elegans LeConte, intermixtus jamaicanus Werner, 
and probably falcatus Chandler. In this group the male genitalia are 
distinctive, the phallobase bearing rounded lateral lobes. The male 
antennae are not expanded and the prothoracic horn is relatively 
narrow. 
A second subgroup has the markings at the tip of the elytra based 
on a pale sutural mark and lateral spots, with a narrow extension 
from the oblique subapical bands tending to reach the very apex on 
each side, where there may be a tiny development of a pit in the 
male. This subgroup contains balsasensis Werner and salvadoren- 
sis Werner. These 2 species have a distinctive pale strip through 
discal clouding on the pronotum. Werner (1962) indicates that the 
phallobase is simple but Chandler (1977) states that there are lateral 
lobes in salvadorensis. Very small size of the genitalia makes inter- 
pretation difficult. The antennae are simple in the male and the horn 
is relatively narrow. 
Finally, a third subgroup has each elytron pale at the apex, with a 
convex anterior border to the pale zone. The most distinctive fea- 
ture is expansion of the intermediate antennal segments in the male, 
and simple phallobase of the male genitalia. The prothoracic horn is 
broader than in the other 2 subgroups, and any clouding on the 
pronotum lacks a median pale stripe. This last subgroup contains 
nevermanni Werner, alvarado Chandler, and vafer Chandler, with 
sexnotatus Champion assignable to it on male characters but having 
the elytral markings so reduced that they are difficult to interpret. 
M. hispaniolae is probably a member of this third subgroup, but 
