122 GEO. H. HORN, M. D. 



Metacycla forms in the system of Dr. Chapuis a group by itself 

 characterized by the open anterior coxal cavities, distinct epipleurse, 

 first joint of hind tarsus not longer than the two following ; claws 

 appendiculate, and thorax distinctly narrowed behind. 



M. insolita Lee, Proc. Acad. 1861, p. 338; loc. cit. 1865, p. 311.— Form 

 unlike in the sexes, color dull yellow, each elytrou with two small, black spots. 

 Autenuse piceons, basal joint pale, extending to apices of elytra. Head smooth. 

 Thorax twice as wide as long, narrower at base, sides feebly arcuate, anterior 

 angles obtusely prominent, hind angles small, subacute, disc convex, with two 

 vague transverse depressions, surface smooth ; scutellum piceous. Elytra coarsely 

 and moderately closely punctate; femora dull yellow, tibiae and tarsi brown. 

 Length .23 %--A6 9 inch.; 6— 11.5 mm. 



Male. — Body winged, elytra covering the abdomen. Last ventral truncate 

 with a broad and vague emargination. 



Female. — Body apterous, abdomen inflated and extended, brownish in color. 

 Last ventral broadly oval at tip. 



Occurs at Cape San Lucas, Peninsula of California. 



9IAL,A€OS09IA Eoseuh. 



Head moderate, inserted nearly to the margin of the eyes, front 

 transversely grooved between the antennae ; lab rum moderately 

 large, not emarginate. Eyes oval, entire; maxillary palpi with the 

 last two joints obconical, nearly equal in length. Thorax quad- 

 rangular, wider than long, disc without depressions; scutellum oval 

 at tip. Elytra distinctly margined at the sides, the epipleurse ex- 

 tending beyond the middle; prosternum distinctly separating the 

 coxae but narrow, broadened at tip, the coxal cavities open behind ; 

 ventral segments not very unlike in length. Legs moderate, tibiae 

 slightly broader at tip, with very well developed spurs on all three 

 pairs; tarsi rather stout, the first joint of posterior pair not quite as 

 long as the next two together ; claws broadly appendiculate. 



The species here placed in Malacomma exhibit some diffei'ences 

 from the generic description as given by Chapuis, but in deference 

 to the views of Mr. Jacoby, to whom one of the species was known, 

 they are allowed to remain. M. Bedel observes that, in the European 

 species, the " outer border of the eyes is provided with long grey 

 hairs." In vittipenne the lower border of the eyes is ciliate, but not 

 in brevicorne. 



The two species known may be separated in the following manner: 



Antenuse piceous, with the three basal joints pale, the joints three to ten more 

 than twice as long as wide. Elytra yellow, with narrow black vittse. 



vittipciiiie. 



