64 
PROCEEDINGS OF THE ACADEMY OF 
anteriorly, emarginate in front, broadly rounded with, a depressed lateral mar- 
gin, wliicli is partly testaceous, disc with two faint impressions near the base. 
Elytra tesselate with, yellow and black ; the spots are usually arranged so as to 
form a scutellar triangular spot, two undulating bands, two or three subapical 
dots, and the lateral margin black ; the suture, margin and four discoidal 
costag are acutely elevated, and crested with pale decumbent hairs ; intervals 
with two rows of quadrate punctures and short decumbent setae ; antennae and 
feet pale testaceous. 
The sculpture of this species differs from that of the others known to me, 
but there are no sulci for the antennae on the under surface of the head, and 
the club is solid. 
Cryptophagus Herbst. 
C. debilis, oblongus parum convexus, testaceus punctatus, dense pubes- 
cens, thorace transversim quadrate, lateribus late rotundatis, medio subtiliter 
unidentatis, angulis anticis rotundatis h.aud dilatatis, elytris versus suturam 
substriatis. Long. '07. 
One specimen from Santa Isabel. Of the form ofC. cellaris, but smaller, 
with, the middle tooth, of the thorax very faint, and the anterior one entirely 
wanting ; the sides are broadly rounded, and behind the tooth may be seen 
two or three very faint small teeth. 
C. piles us, oblongus parum convexus, piceus fortiter punctatus, longius 
pilosus, thorace transversim quadrate, lateribus late rotundatis, depresso-mar- 
ginatis, bidentatis, dente antico distincto, posteriore ad medium sito ; elytris 
subseriatim pilosis. Long. "09. 
Fort Yuma, California. Also resembles C. cellaris, but is more coarsely 
punctured. 
MoNOTOMA Herbst. 
M. marinum, elongatum subdepressum, fuscum vel fusco-testaceum 
opacum, punctatum, breviter parce pallide pubescens, thorace latitudine lon- 
giore, postice subangustato, lateribus subtilissime serrulatis, late sinuatis, an- 
gulis omnibus rectis, antennis articulo penultimo sequente vix angustiore. 
Long. -15. 
San Diego, on the sea shore under Fucus giganteus. Although differing from 
the previously described species of the genus by the 9th joint of the antennae being 
nearly as broad as the tenth, I prefer that this and the following species should 
be placed here, rather than that the number of genera should be multiplied on 
characters of light weight. From the larger size of the insect, I have been able 
to investigate in a satisfactory manner the structure of the tarsi, and find them 
to be four-jointed ; the 3rd joint is however quite small, and closely attached 
to the fourth. On this account, as well as from the elongation of the fifth 
ventral segment, and the apparently close articulation of the anterior segments, 
I am disposed to remove Monotoma from tlie Lathridiidae to the Colydiidae, 
where it may form a group similar in value to the five others into which that 
family has been divided. 
M. rufii^enne, elongatum, subdepressum, nigrum subnitidum capite 
thoraceque punctatis, breviter pallide pubescentibus, hoc latitudine longiore, 
postice subangustato, angulis anticis acutis, posticis obtusis, dorso versus basin 
vage arcuatim impresso ; elytris thorace baud latioribus, rufis pone medium ni- 
gricantibus, striis sex punctulatis, alterisque externis obliteratis, in striis brevis- 
sime pilosis ; pedibus antennisque rufis, his articulo 9no decimo vix angustiore. 
Long. -09. 
San Jose, California, under bark of oak trees. This species is here added 
for the sake of illustrating the next, though it does not, so tar I know, inhabit 
the region herein reported on. The pygidium as in the next is prominent, but 
not so large. 
[March, 
