268 Benj. D. Walsh on the Insects inhabiting the Galls 



behind, much and suddenly constricted before, the hairs laterally so dense as 

 to give a silvery-white appearance there. Scutel small and never white. Ely- 

 tra 2£ times as long as the head and thorax together, exclusive of the rostrum, 

 more finely punctate than the thorax, and with shallow rather acute strise ir- 

 regularly punctate in common with the interstices, (which are flattish,) but not 

 punctato-striate. Lateral margin whitish like that of the thorax: the remain- 

 ing parts dotted with small irregular masses of white hairs arranged so as to 

 appear almost tessellate. Beneath closely and more coarsely punctate with 

 dense hairs. Legs with fine punctures and hairs. Length exclusive of the ros- 

 trum .11 — .13 inch, with the rostrum .140 — .105 inch. 



Forty-four specimens, three of which I bred in July from the Ce- 

 cidomyidous gall S. brassicoides Walsh of the same year's growth, and 

 April 19 I noticed one or two more sitting on these galls where they 

 grew, being then of last year's growth. April 20, on beating bushes 

 full of these galls, I obtained prodigiously large numbers. Specimens 

 sent to Dr. LeConte were thought by him to be uudescribed. Abun- 

 dant as it was in April, I never met with it on any other occasion in 

 the ordinary course of collecting, and I believe that the insect is not 

 double-brooded, but that the July specimens were individuals that had 

 attained maturity before the normal time, as with so many other insects, 

 (e. g. the lepidopterous Batachedra salicipomonella Clem.; see below, 

 and see also Proc &c. Ill, p. 5G9.) A very constant species and easily 

 recognizable by the tessellate appearance of the elytra, which resembles 

 that of Erirhinus mucidus Say. Differs from si/cophanta n. sp., scvtle- 

 latus Schbnh. ( y =erythropterus Say ?),* musculus Say, nigrinus Schonh., 

 quadrigibbus Say, signatus Say, (which I do not know), prunidda 

 Walsh, and many other species, by the elytra nut being punctato-striate, 

 except where the general punctation happens to lie in regular series in 

 the elytral striae. It is also much more elongate than any described spe- 

 cies known to me, except prunicida. 



Larva. — On July 26 I found burrowing in the heart of the gall S. brassicoides 

 of the same year's growth a curculionidous larva, which I have little doubt be- 

 longs to this species, or possibly to the following. Length .07 inch, the body 

 usually curved in a semicircle and twice as long as wide. Color yellowish, but. 

 above mostly curdy white. Head honey-yellow; mandibles brown-black, ro- 

 bust, and almost equilaterally triangular with a subterminal tooth. 



Erirhinus ephippiattjs Say. It may be added to Say's rather 

 brief description, that the rostrum is as long as the head and thorax 

 together, and is so nearly straight as to describe a circular arc of 25 v '. 

 Antenna} inserted on the rostrum -2 — 3-5ths of the way to the tip. 

 Thorax and elytra shaped as in Anth. tesscllatus, but rather less elon- 

 gate. The "slightly indented longitudinal line on the thorax" is an 



* See the note on page 260. 



