96 HYDROPHILID. | 
individual before me of this latter species is considerably smaller and narrower, the 
punctuation is closer and finer, and there are no indications of the doubie punctuation 
of the head, such as exists in C. dispar. 
The species was named in Sallé’s collection ‘‘ C. opuntiw, Dugés in litt.;” but I have 
not adopted the name, as the other species of the genus are also fond of harbouring in 
the refuse of the Opuntie or prickly pears. 
8. Cyclonotum grossulum. (Tab. III. fig. 7.) 
Latum, elliptico-oblongum, nigerrimum, nitidum, antennarum basi, palpis pedibusque nigro-piceis, tarsis rufis ; 
sat crebre et fortiter punctatum; elytris seriebus punctorum, externis grossis, internis ante basin 
desinentibus. 
Long. 34, lat. 23 lin. 
Hab. Guatemata, Las Mercedes 3000 feet, Capetillo, Guatemala city 5000 feet 
(Champion). 
This is closely allied to C. subdepressum, but the individuals are of larger stature, 
and are very readily distinguished by the extremely large punctures forming the outer 
series on the wing-cases; the general punctuation of the upper surface is slightly finer 
and more distant. 
4. Cyclonotum centrale. 
Rotundato-ovale, convexum, nitidum, nigrum, pedibus piceis; antennarum basi, palpis tarsisque testaceis, 
antennarum clava opaca, sed haud infuscata; supra crebre, fere subtiliter punctatum; elytris seriebus 
punctorum majorum impressis, internis longe ante basin desinentibus. 
Long. 24, lat. 13 lin. 
Hab. Panama, Volcan de Chiriqui, 2000 to 4000 feet (Champion). 
Upper surface rather finely punctate, the punctuation on the head rather coarser 
and closer than on the thorax; the elytral punctuation fine but distinct, and rather 
close about the middle of the basal region, but thence becoming more scanty, so 
that the apical and lateral regions are nearly impunctate, except for the series of 
punctures; these, however, are large, deep, and distinct; the six external series reach 
nearly to the base, the four inner series, on the other hand, become fainter towards 
the front, the sutural series being the shorter of the four. The club of the antenne 
appears rather darker than the basal portion; but this is due apparently to the dense 
sensitive pubescence with which it is clothed rather than to any infuscation. On the 
lower face of the posterior tibia there is a single series of three spinigerous punctures 
parallel with the similar punctures of the outer edge. The prosternal carina is very 
abrupt and very prominent at the front. 
This belongs to a group consisting of a few Tropical-American species, differing from 
the members of the subgenus Dactylosternum by the more rotund form and the less 
elongate basal joint of the antenne. 
