342 Mr. T. V. Wollaston on the Calathi 
They are nearly all of them sylvan insects, the C. simplicicollis 
of Lanzarote, and the ascendens and rectus of Teneriffe, being 
apparently the only exceptions. Indeed the C. ascendens, which 
occurs beneath stones at a very lofty elevation (attaining its 
maximum at about 8000 feet above the sea), would seem to re- 
present in these islands the (European) C. fuscus of Madeira. 
And I may further add that the Teneriffan C. ciliatus may per- 
haps be regarded as the analogue of the C. vividus of the latter 
group, the Teneriffan C. depressus as that of the Madeiran 
complanatus, and the barbatus from Grand Canary as that of the 
Porto-Santan fimbriatus. 
Genus CaLaTHus. 
Bonelli, Observat. Ent. i. tab. syn. (1809). 
§ 1. Tibie in utroque sexu (omnino vel fere) simplices. 
a. Corpus magnum, prothorace postice plus minus angustiore, punctis ely- 
trorum discalibus obsoletis. 
1. Calathus sphodroides, n. sp. 
_C, nigropiceus, subdepressus ; capite prothoraceque nitidiusculis, hoc 
subquadrato postice distincte angustato, ad latera sat late recurvo 
necnon ante medium paulo rotundato, angulis anticis subobtusis, 
postice distincte punctato ; elytris minus nitidis, striatis, postice 
subrotundatis ; antennis pedibusque rufo-piceis. 
Long. corp. lin. 7-72. 
Habitat in sylvaticis editioribus Teneriffe, rarissimus. 
The present species and the following one are remarkable 
amongst the Canarian Calathi for their immense size (the C. ci- 
liatus, of the second section, being the only one which equals 
them in bulk), by their prothoraces being narrower behind than 
in front (a structure of rare occurrence in this genus), and by 
the discal punctures of their elytra being obsolete. Inter se 
they may be known by the C. sphodroides being darker than its 
ally, by the different shape of its (more basally punctured) pro- 
thorax, and by its elytra being somewhat less flattened, rounder 
posteriorly, and not so acuminated at their apex. It is extremely 
rare, and confined to the sylvan regions of Teneriffe, at inter- 
mediate and rather lofty elevations, the only specimens which I 
have seen (seven in number) having been captured by myself, 
beneath loose rotting bark, at the Agua Garcia and in the woods 
above Taganana. 
2. Calathus acuminatus, n. sp. , 
C. piceus vel rufo-piceus, depressus ; capite prothoraceque nitidius- 
culis, hoc subquadrato postice paulo angustato, ad latera. late re- 
curvo necnon in medio paulo rotundato, angulis anticis porrectis 
