168 | [SEPTEMBER, 
Microuipus Lec. 
Antenne 1l-articulate, elongate, subserrate. Palpi maxillares breves, 
crassi, articulo 4te conico. Labrum quadratum, apice subrotundatum. Clypeus 
brevis, coriaceus. ‘Tarsi antici articulis 4 subtus breviter lobatis. 
The body is elongate and linear, the head as broad as the thorax, very much 
narrowed in front of the eyes, which are prominent; the tip of the elytra is 
simple in both sexes; the head of the male is slightly trifoveate; the ventral 
segments of the abdomen are entirely corneous. 
1. M. laticeps, elongatus, #neo-niger, {tenuissime cinereo-pubescens, 
clypeo flavo, thorace vix transverso, angulis rotundatis, margine tenui flavo, 
elytris vix rugosis, apice rotundatis anguste flavis. Long. :13. 
San Diego, California; the palpi and antenne are black, the under part of 
the three basal joints of the latter pale. The pale margin of the thorax is 
interrupted at the apex in a specimen from San Francisco, which also has the 
thorax a little narrowed behind, and the posterior angles less rounded than in 
the San Diego specimens. It may perhaps be a different species, but a greater 
number of specimens will be wanted to determine the question. : 
ATELESTUS Er. 
1. A. basalis, opacus, sanguineus, brevissime ‘pubescens, capite fusco, 
thorace latitudine longiore, postice angustato basi producto et emarginato, 
elytris depressis, thorace longioribus, atris basi sanguineo-marginatis. 
Long. °12. 
San Diego, California, under sea weeds. The red of the base of the elytra 
extends on the outer margin almost to the middle. The male of this species, 
as well as of both the following, has the 2nd joint of the anterior tarsi obliquely 
produced above (as in our species of Anthocomus) as far as the end of the 3rd 
joint, which is also elongated. In this character it differs remarkably from 
Erichson’s Atelestus hemipterus, the male of which has the jirst joint of the 
anterior tarsi produced obliquely wader the second. According to Erichson’s 
principles of division, our species should form a separate genus, but as I have 
been able, by his description, to find no difference except this sexual one, I do 
not feel justified in giving a new generic name to the species here described. 
2. A. abdominalis, sanguineus, opacus, brevissime pubescens, thorace 
latitudine longiore, postice angustato, basi producto vix emarginato, elytris 
depressis, thorace longioribus, atris, abdomine toto atro. Long. °12. 
San Diego, with the preceding; the scutellum is red, but the elytra are 
immaculate. 
3. A. collaris, niger, opacus, brevissime pubescens, thorace latitudine 
vix breviore, rotundato, sanguineo basi medio late emarginato, elytris thorace 
brevioribus, scabris. Long. °12. | 
San Francisco? One male sent by Mr. Pease. In the two preceding species 
the elytra are gradually widened from the base, and lie together at the suture 
for the greater part of their length. In this species they are not widened on 
the sides, and commence to separate immediately behind the scutellum, which 
is black. 
Div. 2. Dasytini. 
Dasytes Fabr. 
Although differing much in the form of the body, there appears to be no natu- 
ral mode of separating the following species into genera; the two last species, 
which are the only ones from the eastern part of the continent, do recede 
remarkably from the others in the absence of the appendages between the claws 
of the tarsi. There are however European species similar to them, which are 
retained by Redtenbacher, in the genus Dasytes. We have not in North Ame- 
rica the intermediate forms having one claw simple and the other with an 
